package cn.inter;

import java.util.List;

public class DbUtilsImpl implements DbUtils{

    @Override
    public int save(String sql) {
        return 0;
    }

    @Override
    public int deleteById(int id) {
        return 0;
    }

    @Override
    public List<String> queryAll(String sql) {
        return null;
    }

    @Override
    public int update() {
        return 0;
    }
}
